.mainNav,.topNav{
    padding: 0 170px;
    box-sizing: border-box;
}

.topNav{
    display: flex;
    float:right;
    text-align:right;
    margin:0;
}
.topNav li,.topNav em{
    padding: 0 6px;
    line-height:36px;
    font-size:12px;
    color:#a0a0a0;
}
.topNav li:nth-of-type(4){
    margin-left:6px;
}
.topNav li a{
    color:#a0a0a0;
}
.search{
    clear: both;
    text-align:right;
    overflow: hidden;
    position: absolute;
    right:170px;
    top:24px;
}
.search input {
    border-bottom: 1px solid #aaa;
    height:24px;
    margin-right:10px;
    background:none;
    color:#fff;
}
.search input:focus{
    border:1px solid rgb(14, 108, 231);
}
.logo{
    color:#fff;
    position: absolute;
    width:180px;
    text-align: center;
    left:0;right:0;
    font-size:36px;
    margin:10px auto 0;
}
.logo:hover{
    color:#fff;
}


/* 主导航 */
.mainNav{
    display: flex;
    justify-content: space-between;
    height:40px;
}
.mainNav li{
    color:#fff;
    line-height:40px;
    font-size:12px;
    height:40px;
}
.mainNav li a{
    color:#fff;
}
.secondNav{
    width:100%;
    height:200px;
    right:0;
    z-index:1000;
    padding:0 160px;
    box-sizing: border-box;
    position: fixed;
    background:rgba(0,0,0,.8);
}
.secondNav h2{
    color:#ddd;
    line-height:36px;
    padding-top:10px;
    margin-bottom:8px;
    border-bottom:1px solid #aaa;
}
.secondNav .foot{
    display: flex;
}
.secondNav ul{
    margin: 0 40px 0 0;
}
.secondNav ul li{
    line-height:2;
    color:#fff;
    padding:0 4px;
}
.mainNav li a:hover,.secondNav ul li:hover,.mainNav li:hover,.topNav li a:hover{
    color:rgb(206, 158, 95);
}
.secondNav ul li:hover{
    background:#666;
}

/* 导航底部 */
.navFooter{
    background:#333;
    padding: 0 200px;
    height:62px;
    
}
.navFooter h2{
    line-height: 56px;
    color:#fff;
}